Water【优秀3篇】

Water【优秀3篇】

water 篇一

Water is recognized as the source of rthis source is in

trouble and we are faced with the problem of water pollution.

Polluted water carries poisonous chemicals to rivers and

seaspoisoning animals and infecting our drinking is mainly

polluted by industrial wastes.

For examplewater ing from the paper__making factories will pollute

the clean water near the factories.

The quality of water directly influences our healthand water resources

are limited on ctive measures should be taken immediately to

secure our life.

水被认为是生命的源泉。然而这种来源是遇到麻烦我们正面临着水污染的问题。

河流和海洋被污染的水携带有毒的化学物质中毒动物和感染我们的饮用水。水是主要由工业废物污染。

例如水是从纸——让工厂将污染了干净的水在工厂附近。

水的质量直接影响我们的健康和地球上的水资源是有限的。因此必须采取有效的措施立即获得我们的生活。

Water英语作文 篇二

the provision of safe water necessitates one of the rnajor expenditures

of manpower and revenue in our modern cities. the purification of water is

basically a two-step or three-step process carried out under the strict

supervision of public health scientists and engineers. as the first step,

natural water from the least contaminated source is allowed to stand in

large reservoirs, where most of the mud, clay, and silt settle out; this is

called “sedimentation"。 often in water with high mud content, lime and

aluminum sulfate are added to the water in the settling reservoirs. these

chemicals react in the water to form aluminum hydroxide, which settles

slowly and carries much of the suspended material, including most of

carries much of the suspended material, including most of the bacteria, to

the bottom of the reservoirs. as the second step, the water is filtered

through beds of sand and grovel, which remove other impurities and

chemicals in it. during or after filtration, chemicals are ordinarily added to

the water to kill any remaining harmful bacteria. chlorine is one of the

most mon chemicals used for this purpose. a third step taken by some

rmnicipalities is adding to the water other beneficial chemicals such as

fluoride to make tooth enamel hard, and soda ash to make the water itself

soft. the water purification process, carried out with little variation from

one large city to another, is perhaps the biggest factor in the prevention of

major outbreaks of disease in this country.

Water英语作文 篇三

Water is very important to us,we can't live without

pollution is a serious problem,it causes our drinking water es less 。I think

we should protect the water and reuse them,such as don't pour the waste

water into the river,remember not to spit into the river and don't throw

rubbish into the river and so shoule save water 。 If we do these

well,the water will be we don't save water,the last drop of water

will be our tear.I really hope the government can do something useful to

protect the water.